Supplement·Interactions·Reviewed June 9, 2026
Vitamin B7 interactions.
Vitamin B7 has 7 documented interactions in the NutriStack database: 1 to avoid or watch closely, 4 that need timing or caution, and 2 that work synergistically. The full list, with what each pairing does, is below.
Vitamin B7 at a glance.
A quick, data-grounded summary. The full table is below.
Vitamin B7 has 7 documented interactions in the NutriStack database: 1 to avoid or watch closely, 4 that need timing or caution, and 2 that work synergistically. The full list, with what each pairing does, is below.
Everything that interacts with vitamin b7.
Every supplement and medication in the NutriStack database with a documented interaction with this substance, highest-severity first. Open any pair for the mechanism and sources.
| Substance | Interaction | What happens |
|---|---|---|
| Alpha-Lipoic Acid | Conflict | Alpha-lipoic acid competes with biotin (B7) for the SMVT transporter in the gut, potentially reducing biotin absorption. details → |
| Levothyroxine | Caution | High-dose biotin (>5mg/day) interferes with streptavidin-biotin immunoassays used to measure TSH and free T4. This creates FALSELY NORMAL OR... details → |
| Liothyronine | Caution | Vitamin B7, also called biotin, does not directly change liothyronine levels, but it can distort thyroid lab tests used to monitor therapy. Many... details → |
| Methimazole | Caution | Vitamin B7 can interfere with thyroid immunoassays used to monitor methimazole treatment. The pattern can mimic Graves' disease activity by making... details → |
| Vitamin B5 | Timing Sensitive | Both vitamins ride the same SMVT carrier in the gut and at the cellular level, so they are direct competitive substrates. Cell and transfected-cell... |
| Chromium | Synergy | Chromium picolinate combined with biotin (vitamin B7) has improved fasting glucose and glycemic markers more than chromium alone in studies of... details → |
| Silicon | Synergy | Silicon and biotin (vitamin B7) are commonly combined for hair, skin, and nail support, with silicon supporting collagen and biotin supporting... |
The full vitamin b7 profile.
Benefits, dosing by goal, forms, and the cited evidence for this supplement.
Common vitamin b7 questions.
Quick answers drawn from the table above.
What interacts with Vitamin B7?
In the NutriStack database, Vitamin B7 has 7 documented interactions with other supplements and medications. The most notable include Alpha-Lipoic Acid, Levothyroxine, Liothyronine, Methimazole, and Vitamin B5.
What should you not take with Vitamin B7?
Vitamin B7 is flagged against 1 substance in the database, including Alpha-Lipoic Acid. Review these with a clinician before combining, especially alongside prescription medications.
What works well with Vitamin B7?
Vitamin B7 pairs synergistically with Chromium and Silicon in the NutriStack database. Synergy still depends on dose and timing; open any pair for the detail.
Can you take Vitamin B7 with Alpha-Lipoic Acid?
NutriStack classifies the Vitamin B7 and Alpha-Lipoic Acid pairing as conflict: Alpha-lipoic acid competes with biotin (B7) for the SMVT transporter in the gut, potentially reducing biotin absorption. Separate ALA and biotin by at least 2 hours. If taking ALA long-term, consider extra biotin supplementation.
Check your whole stack
See how vitamin b7 fits your routine.
NutriStack screens your full stack for interactions and timing conflicts, and updates the moment you change it.